Question 971 Deck Safety

The correct answer is D) 10. The symbol 10 on the fire control plans typically represents the halon room or the main battery of Halon 1301 bottles. Halon 1301 is a commonly used fire suppression agent on commercial vessels, and the halon room is a designated space where the Halon 1301 bottles are stored and maintained. The other answer choices are incorrect because they do not represent the halon room or the main battery of Halon 1301 bottles. Symbols 44, 43, and 11 may be used for other fire-related equipment or spaces on the vessel, but they do not specifically indicate the halon room as described in the question.